Vehicle check
Vehicle check

CO₂ emissions check

Enter your reg below to view emissions data, tax bands, and clean-air zone eligibility.

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What does our CO₂ emissions check include?

Everything you need to understand a car’s environmental footprint before buying or driving into a low-emission zone.

Emission levels assessment

See the car's official CO₂ emissions rating in g/km so you know its environmental impact.

Fuel type comparison

Understand how petrol, diesel, hybrid, and electric versions of the same model differ on emissions.

Congestion & low emission zones

Check whether the vehicle qualifies for ULEZ, CAZ, or congestion-charge exemptions.

Tax band information

Instantly view the VED band tied to the vehicle’s CO₂ output to forecast running costs.

Manufacturer standards

Validate that the car meets the manufacturer’s published emissions data for transparency.

Environmental impact rating

Get a plain-English summary that scores the car on eco-friendliness and compliance.

Peace of mind

Avoid surprise fees or restrictions by confirming emissions before you buy or drive into cities.

Browse emissions by car brand

Select a manufacturer to see emissions details for their most popular models.

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How to check a car’s CO₂ emissions on VehicleScore

Understanding CO₂ emissions keeps you compliant with ULEZ, CAZ, and upcoming clean-air legislation. Our emissions checker combines DVLA, Experian, and manufacturer datasets to deliver accurate, real-time readings.

Enter the reg and you’ll see emissions values in g/km, fuel-type comparisons, and the VED tax band linked to the car’s impact.

What’s inside the CO₂ report?

  • Official CO₂ emissions rating (g/km)
  • VED tax band and projected costs
  • ULEZ, CAZ, and congestion-charge eligibility
  • Fuel-type comparisons across petrol, diesel, hybrid, and electric
  • Verification against manufacturer emissions data

Step-by-step guide

  1. Visit the VehicleScore website.
  2. Open the CO₂ emissions check section.
  3. Enter the vehicle's registration number.
  4. Tap “Check Emissions” to generate the report.
  5. Review the results including emissions level, tax band, and zone eligibility.

How to reduce CO₂ emissions

  • Service the vehicle regularly and keep the engine tuned.
  • Drive smoothly, avoiding harsh acceleration or braking.
  • Maintain correct tyre pressures.
  • Consider a hybrid or electric upgrade for the biggest emissions drop.

Additional checks for full peace of mind

Emissions are only part of the story. Combine this lookup with a free car check, mileage check, and stolen vehicle check to make fully informed decisions before you buy.

Frequently Asked Questions

It measures how much carbon dioxide a vehicle emits, in grams per kilometre.

Knowing the value helps you gauge environmental impact, road tax costs, and compliance with low-emission zones.

Enter a registration and we query trusted DVLA and manufacturer feeds.

You receive an instant breakdown covering emissions, tax band, and low-emission zone eligibility.

Carbon output, fuel-type impact, tax band, and compliance with emissions regulations.

It also flags whether the car can enter congestion or clean air zones without extra charges.

It confirms running costs, future tax changes, and whether the car fits city-driving plans.

You can prioritise cleaner, more efficient vehicles and avoid surprise penalties.

Typically anything under 100 g/km, with hybrids and EVs often qualifying.

Lower emissions usually mean cheaper tax bands and exemptions from congestion fees.

UK VED bands are linked directly to CO₂ output—the higher the emissions, the higher the tax.

Our report shows the current band so you can estimate annual costs.

Older cars tend to pollute more and may fail to meet modern standards or ULEZ rules.

Running the check confirms compliance or highlights likely extra charges.

We use up-to-date government and manufacturer datasets.

Data refreshes automatically, so you see the latest verified figures.

Use the form above, enter the reg, and click “CO₂ Check”.

The dashboard loads immediately with emissions, tax, and zone data.

Millions of UK lookups run through our Experian-backed platform every year.

We surface the same emissions data dealers and fleets rely on for stocking decisions.

Free CO₂ Emissions Check | VehicleScore